Omron E2E-X8MD1 — M12 Inductive Sensor, 8 mm, DC 2-Wire NO
SKU: E2E-X8MD1USD 20.00
M12 brass cylindrical inductive proximity sensor, 8 mm unshielded (non-flush) sensing distance, DC 2-wire polarized NO output with M12 4-pin connector support. 12-24 VDC supply, 0.8 kHz response, IP67, 100 mA load.
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Product Overview
The E2E-X8MD1 is the M12 brass-body, 8 mm unshielded (non-flush) inductive proximity sensor with DC 2-wire polarized normally-open output in the E2E standard family. The base SKU supports both pre-wired (with -M1 connector pigtail) and direct M12 4-pin connector variants per the Omron datasheet note system. The DC 2-wire form factor is the classic Japanese-style 'limit switch replacement' that has been the workhorse of Japanese PLC input wiring for two decades. The brass-nickel-plated barrel is IP67-rated and the PBT sensing face resists oils and coolants typical of machine-tool and material-handling environments.
Decoding E2E-X8MD1 model variant logic
The E2E model code: E2E = standard cylindrical inductive; X = standard oil-resistant PVC cable family; 8 = 8 mm sensing; MD = M12 unshielded / DC 2-wire polarized; 1 = NO. Without a suffix, this is the basic NO sensor — connection methods are determined by adding: -M1 = M12 4-pin connector, 2M = 2 m pre-wired PVC cable, -M1TGJ = M12 connector SmartClick + 0.3 m pigtail, -US = cULus recognition. The shielded M12 8 mm sibling is E2E-X2D@ where 2 = sensing distance 2 mm and D = 2-wire DC. The M18 / M30 body siblings are E2E-X14MD1 (M18) / E2E-X20MD1 (M30).
Why DC 2-wire for PLC sinking-input systems
The DC 2-wire sensor operates as a NO contact closure to ground, switching 12-24 VDC loads up to 100 mA directly. This is the ideal interface for Mitsubishi FX-series PLCs (default NPN sink inputs), older Omron C-series CPM1A / CPM2A CPUs, and any application where the controller is wired as a sink.
Response time, sensing dynamics, and over-travel protection
The 0.8 kHz response frequency (1.25 ms response time) gives a maximum counting rate of 800 pulses/sec on a 50 % duty-cycle input — suitable for conveyor speeds up to ~10 m/s at 8 mm range, which exceeds typical machine-tool and packaging-line dynamics. The differential travel is 10 % of sensing distance (0.8 mm) — when a target enters the 0-6.4 mm range, the sensor turns ON; when the target recedes beyond 7.2 mm, the sensor turns OFF; the 0.8 mm hysteresis prevents chattering on vibrating targets. For high-speed counting above 1 kHz, use the E2E-X8MD1S-M1 enhanced variant (1 kHz response).
Key Features
- M12 brass nickel-plated cylindrical body
- 8 mm nominal sensing distance
- DC 2-wire polarized output, normally-open
- Supports M12 4-pin connector and pre-wired variants
- 12 to 24 VDC supply
- 0.8 kHz response frequency
- 100 mA max load current
- 0.8 mA max leakage current when OFF
- SKU: E2E-X8MD1
- Series: E2E Standard Cylindrical Inductive Proximity Sensors
- Voltage: 12 TO 24 VDC
- I/O: 2 I/O
Best-Fit Applications
- End-of-stroke confirmation on a pneumatic cylinder driving a packaging-machine flap — E2E-X8MD1 mounted on the cylinder body, target = ferrous.
- Tool-position feedback on an automated tool-changer — E2E-X8MD1 confirming tool carousel positions where the DC 2-wire output handles the relay.
- Conveyor transfer gate position verification — sensor mounted to detect gate-open vs gate-closed state; DC 2-wire output drives the gate's.
- Bottle-detect on a filling line — sensor counts bottles at the fill-station trigger point; 2-wire output feeds a counter relay.
Buying Checklist
- Pick E2E-X8MD1 as the base M12 DC 2-wire NO inductive sensor — typically ordered as E2E-X8MD1-M1 or E2E-X8MD1 2M
- Pick E2E-X8MD1-M1 for M12 4-pin connector for quick-disconnect installations or when cable field replacement is needed
- Pick E2E-X8MD1 2M for fixed installations with wiring routed through a junction box
- Pick E2E-X8MD2 2M for normally-closed output — pick for fail-safe 'sensor blocked = output ON' logic
- Pick E2E-X2D1 2M for shielded 2 mm sensing — pick if installing in a tight ferrous bracket
- Pick E2E-X8MY1 2M for DC 3-wire NPN — pick for PNP/sourcing PLCs
Technical Specifications
| Model | E2E-X8MD1 |
|---|---|
| Series | E2E Standard Cylindrical Inductive Proximity Sensors |
| Type | M12 unshielded, DC 2-wire polarized, NO |
| Sensing Distance | 8 mm ±10% (with iron 30×30×1 mm standard target) |
| Setting Distance | 0 to 6.4 mm (80% of nominal sensing distance) |
| Differential Travel | 10% max of sensing distance |
| Standard Sensing Object | Iron, 30 × 30 × 1 mm |
| Response Frequency | 0.8 kHz (1.25 ms response time) |
| Power Supply Voltage | 12 to 24 VDC, ripple (p-p) 10% max |
| Operating Voltage Range | 10 to 30 VDC |
| Leakage Current | 0.8 mA max (sensor OFF) |
| Control Output | DC 2-wire polarized, NO, 100 mA load max |
| Residual Voltage | 1.5 V max at 100 mA load |
| Sensing Face Material | PBT (polybutylene terephthalate) |
| Operating Temperature | -25 to +70 °C |
Resources & Downloads
FAQ for E2E-X8MD1
What's the difference between E2E-X8MD1 and E2E-X8MD1 2M?
E2E-X8MD1 with no suffix is the base catalog number — per the Omron datasheet note system, this base SKU requires a connection suffix when ordered (E2E-X8MD1-M1 for M12 4-pin connector, E2E-X8MD1 2M for 2 m pre-wired cable, E2E-X8MD1-M1TGJ for SmartClick connector + 0.3 m pigtail). The base SKU is occasionally listed in catalogs for users who order multiple connection methods within a single assembly. E2E-X8MD1 2M (the separate SKU listing) is the fully-specified pre-wired 2 m variant.
Can I use the E2E-X8MD1 with a Mitsubishi FX-series PLC?
Yes — Mitsubishi FX-series PLC inputs are NPN sink by default, which is exactly the use case for a DC 2-wire polarized output. Wire the brown wire (+V) to the 24 VDC power supply, the blue wire (0V) to the PLC's input terminal 'X0', 'X1', etc. The PLC's S/S terminal connects to 0 V (common for sink inputs).
What does the operating LED on the E2E-X8MD1 indicate?
The orange LED on the rear of the sensor body illuminates when the sensor is detecting a target (output ON state). It draws current internally and is not load-driven — it's safe to view from any angle including through the back of the housing. The LED does not light when the sensor is OFF (no target detected), even if the supply polarity is reversed (the sensor just won't switch).
What is the leakage current of 0.8 mA on the E2E-X8MD1, and when is it a problem?
Leakage current is the small current that flows from the sensor to the load even when the sensor is in the OFF state (no target detected). For DC 2-wire sensors like the E2E-X8MD1, the 0.8 mA max leakage passes through the load continuously when no target is detected.
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